Explanation:
Hey there!!!
The group of organs working together to bring a complex substances to simpler substances called digestive system.
It includes various organs, such as, mouth, stomach, small intestine, large intestine, etc.
<em><u>Hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>
Cell signalling pathways are used to maintain homeostasis. Enzymes are normally present in adequate concentrations but whenever the need for a particular enzyme or protein arises, cell signalling is used.
Signal is sent to that particular cell, the process of genetic expression is activated. A gene that codes for that particular protein(enzyme of interest) goes through transcription, where that genes DNA is copied to make a messenger RNAmolecule, which is further expressed by a process called Protein expression. Lastly, transported to that particular area where it is needed.
It has greatly impacted modern science and it proves that every living thing on Earth is made up of one or more cells
Carbon is found in the non-living part of the hydrosphere, atmosphere, and Geo-sphere, as carbonate (CaCO3) rocks and dead organic matter, such as humus in soil.
Answer:
Probably because they just need air to being able to live and have air going in and out like carbon dioxide and getting rid of used air.
